Influence of Galvanized Coatings on Abrasion Circle Friction Stir Spot Welding Aluminium to Steel for Automotive Applications

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Abstract:

It has previously been shown that dissimilar Al-alloy and un-coated steel automotive sheets can be successfully welded with a cycle time of less < 1 s using a novel solid state joining approach; Abrasion Circle Friction Stir Spot Welding (ABC-FSSW). The ABC-FSSW technique provides an effective strategy for exposing a larger clean steel surface during welding than conventional FSSW, allowing high failure energy joints to be produced. In this study the influence of different steel zinc coatings on the viability of the ABC-FSSW process has been systematically investigated - focusing on the effect on the process window, weld temperatures, and joint performance. The effect of a galvanised coating on the weld formation, zinc dispersal in the joint, and interface intermetallic reaction behaviour are discussed.

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Materials Science Forum (Volumes 783-786)

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1741-1746

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May 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Y.C. Chen, A. Gholinia and P.B. Prangnell, Interface structure and bonding in abrasion circle friction stir spot welding - a novel approach for rapid welding aluminium alloy to steel automotive sheet. Mater. Chem. Phys. 134 (2012) 459– 463.

DOI: 10.1016/j.matchemphys.2012.03.017

Google Scholar

[2] R. S. Mishra, M. W. Mahoney, Friction stir welding and processing, ASM International, (2007).

Google Scholar

[3] P.B. Prangnell, Y. C Chen, A. Panteli, F. Haddadi, Friction spot welding dissimilar materials with rapid cycle times, THERMEC' 2011, Quebec City Convention Centre, August 1-5, (2011).

Google Scholar

[4] A.R. Marder, The metallurgy of zinc-coated steel, Progress in Mater. Sci. 45 (2000) 191-271.

Google Scholar

[5] J. Nakano, D.V. Malakhov, S. Yamaguchi, G.R. Purdy, A full thermodynamic optimization of the Fe–Zn–Al system within the 420–500◦C temperature range. Calphad 31 (2007) 125–140.

DOI: 10.1016/j.calphad.2006.09.003

Google Scholar